Cuff device



FIG. 1 is a front-bottom perspective view of a cuff device showing the claimed design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof

FIG. 5 is a right side view thereof;

FIG. 6 is a front-top perspective view thereof; and,

FIG. 7 is a top view thereof.

The broken lines form the boundary of the claimed design and form no part of the claimed design. 

The ornamental design for a cuff device, as shown. 